Servotech offers a range of Transtech Signal Conditioners.
The PTD series of modules have an inbuilt power supply, typically 24Vdc. The PTD range accepts standard instrumentation Signal Inputs (mA, Vdc) and provides two (2) fully adjustable and independent relay trips.
Trip modules with in-built power supply of 24Vdc, accepting most instrument signal inputs and giving a changeover relay trip output.
PTS = single relay output
PTD = dual relay output